These are the two hoses that go through your firewall and supply your heatercore with coolant. If you have a 1989-1997 Miata and have a leaky CAS(Cam Angle Sensor) O-Ring, it will drip onto this hose and cause a premature rupture.

These hoses are often overlooked by most people. These hoses are the SAME AGE as your radiator hoses. These run the SAME COOLANT through them. If your radiator and or hoses are new and these aren’t, you might have to take care of them.

We see a lot of cars fail due to these hoses letting go.

EVERY YEAR CAR is different! 1990-1993 is one set of hoses, 1994-1997 is one set of hoses,
1999-2000 is one set of hoses, 2001-2005 is one set of hoses.

(4 hoses that route coolant from throttle body, oil cooler, back and front of head)

These hoses are often overlooked by most people. These hoses are the SAME AGE as your radiator hoses. These run the SAME COOLANT through them. If your radiator and or hoses are new and these aren’t, you might have to take care of them.

We see a lot of cars fail due to these hoses letting go. These small hoses route coolant from the back of the head to the oil cooler(if you have one), then from there to the throttle body, from there it goes to the thermostat housing and then from there to the side by the water pump.

EVERY YEAR CAR is different! 1990-1993 is one set of hoses, 1994-1997 is one set of hoses, 1999-2000 is one set of hoses, 2001-2005 is one set of hoses. If you have done a motor swap into your car, please verify before ordering.

This is a genuine Mazda part. A lot of people forget to change this crucial component of their cooling system. There are many write-ups about this being the best choice for genuine thermostats out of all years.

We also include a easy to use adhesive backed gasket with the purchase of the thermostat.

This is a genuine Mazda part. This is the grommet that protects the heater core from wearing a hole through the hard lines that protrude through the firewall. A lot of people have removed or reinstalled their heater cores and not switching these grommets can cause some huge issues. These help the heater core lines stay in the center of the hole and not letting it wear a hole in itself.

These Koyo radiator units are completely plug and play with all OEM hardware and thicker aftermarket sway bars! Koyo smartly designed their Miata radiator to take the factory cap, factory fans and even the factory plug.
37mm Aluminum Racing features same almost the same size as the factory one, but with far superior cooling. The entire radiator is aluminum(no easy to break plastic)

Koyo Offers the best in Quality and Fitment
Koyo leads the radiator industry in quality, performance, fitment, and extensive list of vehicle applications. Our quality begins with the careful testing in our R&D department, then to the manufacturing in Koyo’s privately owned ISO 9001 certified factories, and finally to our class leading packaging. This process assures that each Koyo OE aftermarket replacement radiator arrives safely and performs perfectly in the hands of the shop and end user. Our engineers carefully design our radiators offering a true plug and play installation: No drilling, cutting, relocating, or stretching
to get our radiators to fit properly. When you buy a Koyo radiator, you will receive a component that has been engineered to the highest standards.

Koyo Saves Installers Time and Money
Do you value your time? Koyo does! When installing radiators of lesser quality, consider the potential increase in defect rate and the overall impact this may have on your business. Aside from the cost of replacing defective radiators and absorbing these additional labor costs, how much will it take to restore your customer’s trust? This wasted time and money may very well have been spent maintaining and seeking brand new business. Koyo radiators are renowned for the best in quality and fit and finish meeting or exceeding OE standards, resulting in the highest rate of reliability and overall savings in the marketplace. Buying a Koyo Radiator ensures your business’s success and longevity. You cannot buy, sell, install or own a better radiator.

Multi-fit Combination Radiators
Koyo not only saves you time and money, but valuable warehouse space as well. Because Koyo manufactures our own radiators in our privately owned factories, we have the ability to react quickly to market changes. Our Engineering Department continuously seeks to make radiator consolidations by upgrading existing radiators and enabling them to fit additional model years and applications. Koyo combines multiple radiators into one, reducing warehouse storage space which allows our customers to stock additional applications. More vehicle coverage and compatibility
will result in increased sales.

These Koyo radiator units are completely plug and play with all OEM hardware and thicker aftermarket sway bars! Koyo smartly designed their Miata radiator to take the factory cap, factory fans and even the factory plug.

This JUMBO 53mm is their thickest radiator offering quite a big more coolant capcity over their 37mm counter part.

Koyo Offers the best in Quality and Fitment
Koyo leads the radiator industry in quality, performance, fitment, and extensive list of vehicle applications. Our quality begins with the careful testing in our R&D department, then to the manufacturing in Koyo’s privately owned ISO 9001 certified factories, and finally to our class leading packaging. This process assures that each Koyo OE aftermarket replacement radiator arrives safely and performs perfectly in the hands of the shop and end user. Our engineers carefully design our radiators offering a true plug and play installation: No drilling, cutting, relocating, or stretching
to get our radiators to fit properly. When you buy a Koyo radiator, you will receive a component that has been engineered to the highest standards.

Koyo Saves Installers Time and Money
Do you value your time? Koyo does! When installing radiators of lesser quality, consider the potential increase in defect rate and the overall impact this may have on your business. Aside from the cost of replacing defective radiators and absorbing these additional labor costs, how much will it take to restore your customer’s trust? This wasted time and money may very well have been spent maintaining and seeking brand new business. Koyo radiators are renowned for the best in quality and fit and finish meeting or exceeding OE standards, resulting in the highest rate of reliability and overall savings in the marketplace. Buying a Koyo Radiator ensures your business’s success and longevity. You cannot buy, sell, install or own a better radiator.

Multi-fit Combination Radiators
Koyo not only saves you time and money, but valuable warehouse space as well. Because Koyo manufactures our own radiators in our privately owned factories, we have the ability to react quickly to market changes. Our Engineering Department continuously seeks to make radiator consolidations by upgrading existing radiators and enabling them to fit additional model years and applications. Koyo combines multiple radiators into one, reducing warehouse storage space which allows our customers to stock additional applications. More vehicle coverage and compatibility
will result in increased sales.

These Koyo radiator units are completely plug and play with all OEM hardware and thicker aftermarket sway bars! Koyo smartly designed their Miata radiator to take the factory cap, factory fans and even the factory plug.

This is Koyo’s OEM replacement radiator for cars with the manual transmission. Koyo has an outstanding reputation for providing the automotive consumer with a radiator that is reliable, offers optimal cooling, and has factory fit and finish.

These are great for stock cars, to lightly modified. These feature plastic end tanks with an aluminum core. These are a very cost effective option in comparison to OEM units.

Multi-fit Combination Radiators
Koyo not only saves you time and money, but valuable warehouse space as well. Because Koyo manufactures our own radiators in our privately owned factories, we have the ability to react quickly to market changes. Our Engineering Department continuously seeks to make radiator consolidations by upgrading existing radiators and enabling them to fit additional model years and applications. Koyo combines multiple radiators into one, reducing warehouse storage space which allows our customers to stock additional applications. More vehicle coverage and compatibility
will result in increased sales.

Cool your car down with one of the industry’s leading radiators. Best bang for the buck
with a lifetime warranty is what they’re known for. Their radiators includes a new cap.
They are fully aluminum to provide superior cooling and durability. This beefy oversized radiator retains all original fans and functions. NO DRILLING OR CUSTOMIZATION necessary. It is 100% an OEM fit.

Mishimoto Description:
By replacing your current Miata radiator with a Mishimoto performance aluminum radiator you will undoubtedly notice a cooler more efficient running engine. All Mishimoto Mazda Miata performance aluminum radiators are designed and engineered to maximize cooling efficiency, protect your car from the overheating, and boost overall engine functions. With its lightweight dual core, 100% brazed aluminum, and polished tank ends installing a direct OEM fit Mishimoto radiator is effortless, no cutting or modification is required. All Mishimoto radiators come with a high pressure 1.3 bar Mishimoto radiator cap and a great warranty

LIFETIME WARRANTY
Mishimoto Performance (MP), warrants all of its products under its ‘no questions asked’ limited lifetime warranty policy. Regardless of the defect in product, Mishimoto will replace the original product. Warranty claims must be accompanied by the original sales receipt from an authorized dealer.

A trained professional should install all MP products. Any issues with compatibility or installation should be addressed before attempting to install the product.

The purchaser’s remedy for breach of this limited warranty, exclusive of all other remedies provided by law, is expressly limited to repair or replacement of any part or parts. All products returned for warranty consideration must be returned to MP with all transportation expenses prepaid.
MP shall not be responsible for damages to its products or injury to persons using the products in any manner that would constitute improper operation, including but not limited to: incorrect opening of radiator pressure caps, burst hoses, unintended application or usage not intended by MP, negligence, improper installation, or any other use that may cause damages or injury. MP shall not be responsible for injury or harm to persons or property when caused by persons or vehicles using its products.

ACCIDENT PROTECTION
Mishimoto, under its no questions asked warranty policy, will provide a warranty for all claims including vehicles involved in accidents. Warranty claims must include pictures of the accident and an official police report, and must be within three months of the accident.

FITMENT DISCLAIMER
All Mishimoto products are engineered to fit with OEM applications, as well as other Mishimotoproducts.

The X-Line series for the 90-97 provides you with an extra row of cooling(3 row instead of 2)

Cool your car down with one of the industry’s leading radiators. Best bang for the buck with a lifetime warranty is what they’re known for. Their radiators includes a new cap. They are fully aluminum to provide superior cooling and durability. This beefy oversized radiator retains all original fans and functions. NO DRILLING OR CUSTOMIZATION necessary. It is 100% an OEM fit.

Mishimoto Description:
By replacing your current Miata radiator with a Mishimoto performance aluminum radiator you will undoubtedly notice a cooler more efficient running engine. All Mishimoto Mazda Miata performance aluminum radiators are designed and engineered to maximize cooling efficiency, protect your car from the overheating, and boost overall engine functions. With its lightweight dual core, 100% brazed aluminum, and polished tank ends installing a direct OEM fit Mishimoto radiator is effortless, no cutting or modification is required. All Mishimoto radiators come with a high pressure 1.3 bar Mishimoto radiator cap and a great warranty

LIFETIME WARRANTY
Mishimoto Performance (MP), warrants all of its products under its ‘no questions asked’ limited lifetime warranty policy. Regardless of the defect in product, Mishimoto will replace the original product. Warranty claims must be accompanied by the original sales receipt from an authorized dealer.

A trained professional should install all MP products. Any issues with compatibility or installation should be addressed before attempting to install the product.

The purchaser’s remedy for breach of this limited warranty, exclusive of all other remedies provided by law, is expressly limited to repair or replacement of any part or parts. All products returned for warranty consideration must be returned to MP with all transportation expenses prepaid.
MP shall not be responsible for damages to its products or injury to persons using the products in any manner that would constitute improper operation, including but not limited to: incorrect opening of radiator pressure caps, burst hoses, unintended application or usage not intended by MP, negligence, improper installation, or any other use that may cause damages or injury. MP shall not be responsible for injury or harm to persons or property when caused by persons or vehicles using its products.

ACCIDENT PROTECTION
Mishimoto, under its no questions asked warranty policy, will provide a warranty for all claims including vehicles involved in accidents. Warranty claims must include pictures of the accident and an official police report, and must be within three months of the accident.

FITMENT DISCLAIMER
All Mishimoto products are engineered to fit with OEM applications, as well as other Mishimotoproducts.

This is a genuine Mazda part. As these cars get old, many of us(even seasoned mechanics) will break this delicate part. This aluminum piece cracks/breaks easy, especially if its old and has seen many mechanics in it’s day. A new thermostat cover is crucial part of your cooling system. Make sure to purchase a gasket too!

This is a genuine Mazda part. If you are doing your front service, or have a small leak, DON’T FORGET THIS O-RING! If you’re in there doing some work, might as well make sure you hit all the gaskets. This O-Ring fits on the Waterneck(to the head).